#![no_std]
#![no_main]

use core::arch::asm;

use fpga_lib::{
    interface::{Buttons, Leds},
    panic_handler,
    register::X31,
    vga::{BLACK, BLUE, FONT_WIDTH, GREEN, RED, VGA, WHITE},
};

panic_handler! {}

#[unsafe(no_mangle)]
pub extern "C" fn main() -> !
{
    loop
    {
        unsafe {
            VGA::draw_string(10, 10, "Running RUST !", GREEN);
            VGA::draw_string(10, 23, "LedIp state :", RED);

            let clint_time: *mut u64 = 0x0200bff8 as *mut u64;

            let clocks = *clint_time;
            let seconds = clocks / (125_000_000 / 2);
            VGA::draw_string(100, 10, "CLint:", BLUE);
            VGA::draw_u64(150, 10, clocks, BLUE, BLACK);
            VGA::draw_string(100, 23, "(s)", BLUE);
            VGA::draw_u64(150, 23, seconds, BLUE, BLACK);

            for i in 0..4
            {
                VGA::draw_char(10 + i * 16, 46, 'B', RED);
                VGA::draw_char(16 + i * 16, 46, (b'0' + i as u8) as char, RED);

                if Buttons::get_button(i as u8)
                {
                    Leds::set_led(i as u8, true);
                    VGA::draw_char_bg(10 + i * 16, 59, '1', GREEN, BLACK);
                }
                else
                {
                    Leds::set_led(i as u8, false);
                    VGA::draw_char_bg(10 + i * 16, 59, '0', RED, BLACK);
                }
            }
        }
    }
}